These are NOT the adventures of Clark Kent as Superboy. In the Superman mythology from 1939 to 1986, Clark Kent became a super-hero as a youngster, and those adventures appear in Superboy (1949 series). In 1987, DC comics changed the mythology of Superman and he only became a super-hero as an adult. In the current Superman mythology, Superboy (that is, Clark Kent) as a young Superman, does not exist. Instead, the post-1987 Superboy is an clone of Superman.